Exploració per tema "Sistemes dinàmics diferenciables"
Ara es mostren els items 41-60 de 252
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Closed Geodesics and Billiards on Quadrics related to elliptic KdV solutions
(2004)
Article
Accés obertWe consider algebraic geometrical properties of the integrable billiard on a quadric Q with elastic impacts along another quadric confocal to Q. These properties are in sharp contrast with those of the ellipsoidal Birkho® ... -
Codimension-3 bifurcation for continuous saddle bimodal linear dynamical systems
(2018-02-01)
Article
Accés obertWe continue the study of the structural stability and the bifurcations of planar continuous bimodal linear dynamical systems (that is, systems consisting of two linear dynamics acting on each side of a straight line, ... -
Communication through coherence in a realistic neuronal model
(Universitat Politècnica de Catalunya, 2020-07)
Projecte Final de Màster Oficial
Accés obertThe Communication Through Coherence (CTC) theory establishes that neural communication is much effective if the underlying oscillatory activity of both populations are phase locked, that is, the input from the emitting ... -
Computation of invariant curves in the analysis of periodically forced neural oscillators
(Springer, 2018)
Capítol de llibre
Accés obertBackground oscillations, reflecting the excitability of neurons, are ubiq- uitous in the brain. Some studies have conjectured that when spikes sent by one population reach the other population in the peaks of excitability, ... -
Computation of periodic orbits and their invariant manifolds in the RTBP
(Universitat Politècnica de Catalunya, 2014-07)
Projecte Final de Màster Oficial
Accés obertThis project is a study of the RTBP, in particular of a modification of this problem devised to study orbits of the Moon. Some parts of the project are done analytically while others numerically. The analytical part focuses ... -
Computation of the invariant manifolds of infinity in the restricted circular planar three body problem with the parametrization method
(Universitat Politècnica de Catalunya, 2017-05)
Projecte Final de Màster Oficial
Accés obertThis work analyses the parabolic stable manifolds of the periodic orbits at infinity for the Restricted Planar Circular Three Body Problem. Using the parametrization method we prove the existence of such manifold and we ... -
Computer-Assited Proofs in Dynamics
(Universitat Politècnica de Catalunya, 2020-10)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorInterval analysis is presented as a solution to obtain rigorous results using computers. We present a methodology of computer-assisted proofs which involves the use of interval computations. In this thesis we introduce the ... -
Constraint algorithm for extremals in optimal control problems
(2007-07-27)
Article
Accés obertA characterization of different kinds of extremals of optimal control problems is given if we take an open control set. A well known constraint algorithm for implicit differential equations is adapted to the study of ... -
Constraint algorithm for k-presymplectic Hamiltonian systems. Application to singular field theories
(2009-03-10)
Working paper
Accés obertThe k-symplectic formulation of field theories is especially simple, since only tangent and cotangent bundles are needed in its description. Its defining elements show a close relationship with those in the symplectic ... -
Continua of periodic points for planar integrable rational maps
(Research India Publications, 2016-09)
Article
Accés obertWe present three alternative methodologies to find continua of periodic points with a prescribed period for rational maps having rational first integrals. The first two have been already used by other authors and apply ... -
Continua of periodic points for planar integrable rational maps.
(2015-11-30)
Report de recerca
Accés obertWe present three alternative methodologies to find continua of periodic points with a prescribed period for rational maps having rational first integrals. The first two have been already used for other authors and apply ... -
Continuation of the exponentially small lower bounds for the splitting of separatrices to a whiskered torus with silver ratio
(2014-09)
Report de recerca
Accés obertWe study the exponentially small splitting of invariant manifolds of whiskered (hyperbolic) tori with two fast frequencies in nearly-integrable Hamiltonian systems whose hyperbolic part is given by a pendulum. We consider ... -
Continuation of the exponentially small transversality for the splitting of separatrices to a whiskered torus with silver ratio
(Springer, 2014-11)
Article
Accés obertWe study the exponentially small splitting of invariant manifolds of whiskered (hyperbolic) tori with two fast frequencies in nearly integrable Hamiltonian systems whose hyperbolic part is given by a pendulum. We ... -
Contribució a l'estudi dels exponents de Lyapunov per a sistemes bilineals i a l'analisi de les bifurcacions en el convertidor boost controlat amb superficies de lliscamente i histèresi.
(Universitat Politècnica de Catalunya, 2006-10-31)
Tesi
Accés obertDesprés d'un capítol d'introducció (capítol 2) on es definieixen i s'expliquen les característiques i els fenòmens més importants dels sistemes dinàmics, aquest treball el podríem dividir bàsicament en dues parts. La primera ... -
Contribución a la identificación de sistemas dinámicos mediate métodos conexionistas
(Universitat Politècnica de Catalunya, 1997-10-24)
Tesi
Accés obertEl presente trabajo de tesis doctoral propone una clase de modelos, con estructura de red neuronal con dinámica aditiva evolucionando en tiempo continuo, para la identificación de sistemas dinámicos.<br/><br/>Para la clase ... -
Contribución a la modelación y al control descentralizado de sistemas de gran escala mediante descomposición con solapamiento
(Universitat Politècnica de Catalunya, 1998-06-12)
Tesi
Accés obertUna gran variedad de sistemas reales están compuestos por subsistemas compartidos. Por razones estructurales y/o computacionales es a menudo conveniente construir controladores descentralizados. Encontramos un sinfín de ... -
Contributions to Libration Orbit Mission Design using Hyperbolic Invariant Manifolds
(Universitat Politècnica de Catalunya, 2007-07-24)
Tesi
Accés obertAquesta tesi doctoral està emmarcada en el camp de l'astrodinàmica. Presenta solucions a problemes identificats en el disseny de missions que utilitzen òrbites entorn dels punts de libració, fent servir la teoria de sistemes ... -
Coprime factorization of the transfer matrix of a singular linear systems
(Universidad de León, 2011)
Text en actes de congrés
Accés obert -
Counting configurations of limit cycles and centers
(2023-04-10)
Report de recerca
Accés obertWe present several results on the determination of the number and distribution of limit cycles or centers for planar systems of differential equations. In most cases, the study of a recurrence is one of the key points of ... -
Counting configurations of limit cycles and centers
(2023-08)
Article
Accés obertWe present several results on the determination of the number and distribution of limit cycles or centers for planar systems of differential equations. In most cases, the study of a recurrence is one of the key points of ...